198126 has 20 divisors (see below), whose sum is σ = 444312. Its totient is φ = 65988.

The previous prime is 198109. The next prime is 198127. The reversal of 198126 is 621891.

It is a super-3 number, since 3×198126³ = 23331661633033128, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 198126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198127) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 450 + ... + 773.

2¹⁹⁸¹²⁶ is an apocalyptic number.

198126 is an abundant number, since it is smaller than the sum of its proper divisors (246186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198126 is a wasteful number, since it uses less digits than its factorization.

198126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 1228 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 198126 is about 445.1134686796. The cubic root of 198126 is about 58.2971276463.

It can be divided in two parts, 198 and 126, that added together give a square (324 = 18²).

The spelling of 198126 in words is "one hundred ninety-eight thousand, one hundred twenty-six".